有效消除光晕现象和颜色保持的彩色图像增强算法-Core.PDFVIP

22 8 V ol . 22 N o. 8 2010 8 Jo ur nal of Co mputer- A ided Design Computer G raphics A ug. 2010 1) 1, 2) * 1, 3) 1) 1) 肖 泉 丁兴号 王守觉 廖英豪 郭东辉 , , , , 1) ( 36 1005) 2) ( 36 1005) 3) ( 100083) ( x q_x mu@ y ahoo . com . cn ) , Retinex . , . , , ; , , Retinex ; . M SRCR , , , . ; ; R et inex ; ; T P39 1. 41 A Halo-Free and Hue Preserving Algorithm for Color Image Enhancement 1) 1, 2) * 1, 3) 1) 1) Xiao Qu an , D ing Xingh ao , Wang Shoujue , L iao Y ing hao , and Guo Donghu i 1) (School of Inf ormation Science and Technology , X iamen University , X iamen 36 1005) 2) (Key Laboratory of Underwater A coustic ommunication and Mar ine I nf ormation Technology , X iamen University , X iamen 36 1005) 3) (Laboratory of N eural N etwork, Institute of Semiconductors, hineseA cademy of Sciences, Beij ing 100083) Abstract A s t he est imat io n o f b ackgr ound lum inance at t he mutat ion of light is u su ally inaccurat e, the tr aditio nal R etinex enh ancement alg orit hms suff er f rom the h alo phenomenon, as w ell as t he lo ss of det ails and co lor dist ort ion in t he enh anced image. Based on t he charact erist ics o f the human visu al sy st em , a novel colo r imag e enh ancem ent algo rithm is pro posed in t his w o rk. A s t he hum an visu al sy st em is sen sit ive to st ru ct ural f eat ures and color inf ormat ion of image, a color- bilat eral f ilter is con stru cted t o est imat e the backg round luminance, w hich can ef f ectively overco me